Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ace51b6bac8501…

MALICIOUS

PDF

72.4 KB Created: 2021-02-22 09:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5ea2cbd06c4babd08f26d47dee1ea751 SHA-1: cf6bfe4c5ae42e3da22a44cf4550793ad0fe6e8b SHA-256: c1ace51b6bac8501693a0f33bb044b79e8dc53d956090c98cf2ebad988e64113
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=duck+life+hacked PDF link annotation
    • https://cdn.sqhk.co/xewasejeve/GjjxR7J/48360779353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384464/normal_5feef70d58ae8.pdfIn PDF document text
    • https://vevavosabiwebe.weebly.com/uploads/1/3/4/3/134349804/c995361.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/zoxabom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426075/normal_601d1314da0af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489835/normal_5fcc6f3ac475a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473632/normal_5fec049a8e222.pdfIn PDF document text
    • https://cdn.sqhk.co/juzexokogim/bS1RHjb/luck_prize_machine_fidget_spinner.pdfIn PDF document text
    • https://jirorenuges.weebly.com/uploads/1/3/0/8/130874518/bivilona_nagoki_lofamixusag.pdfIn PDF document text
    • http://klossheff.xyz/ms_project_2019_manualjkib8.pdfIn PDF document text
    • https://lurenosofen.weebly.com/uploads/1/3/0/7/130740325/rukalafafojis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xezonijida/sawemus.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/dalawi.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/city_of_bloomington_mn_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/5255424415.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D6 4484 bytes
SHA-256: 8970921685ffa7ef232612bf5837f195b5ce84b843a4a1143768e504d78cfd16
font_01_sfnt_off0000e324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 10412 bytes
SHA-256: 085685a7b47afa55433a3d9b3e42eac37f7cac640273234783b28c2107ca1b11
font_02_sfnt_off000106ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333